Reflector.



PATENTED NOV. 26, 1907. A. D. CURTIS.

REFLECTOR.

APPLICATION FILED mums, 1906.

0.1 m. x. W

AUGUSTUS D. CURTIS, OF CHICAGO, ILLINOIS.

REFLECTOR.

Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed January 18, 1906. Serial No. 296.599.

To all whom it may concern:

Be it known that I, AUGUSTUS D. CURTIs,

citizen of theUnited States, residing at Chicago, in the county of Cookand State of Illinois,- have invented certain new and usefulImprovements in Reflectors, of which the following is a specification.This invention relates to improvements in the construction. of lightreflectors especially adapted for use in connection with incandescentelectric lamps.

An important object attained through the improvements which form thesubject matter of this application for patent is the diffusion of therays of light so that there are no shadows produced or thrown on theobi'ects illumined by the combined effect of the amps and the reflector.

A further object is to produce a reflector having uni ue ornamentaleffects, there being insuch evices a certain degree of utility in thedesign or conformation, inasmuch as many of this class ofreflectors areused in displa 'ng goods in store windows and it is deslralile that thereflector should contribute to and harmonize with the artistic orornaniental eflects producedby the window dis- P y In' the accompanyingdrawing I have shown my invention as a reflector in the general sha e infront elevation or around .its

edges 0 a parallelogram, and in cross-section, in the form ofa hood inwhich the u :per side overhangs the lower ed e, and t e ack is concaveconformin to t care of a circle. I do not howeverwish to be understoodas limiting myself herein to such general form as the essential featuresof my invention are applicable to many different shapes ofreflectors.

In the accompanying drawing; Figure 1 is a front elevational view of myinvention in operative osition and in combination with two incan escentelectric lamps; Fi 2 is an inside plan viewof the reflector wit out thelamps, and Fig. 3 is a cross-section onthe dotted line shown in Fig. 1,with the lamp V removed.

i able material which Referring. to the details of the drawing, Arepresents generally a reflector constructed in accordance with myinvention of any suitmay have a olished refleeting surface or haveapplied thereto a substance having light reflecting qualities.

(1 is an opening to receive the lamp socket b which, is of any wellknown construction and has secured thereon incandescent lamps b whichhave the usual filaments b.

On each side of the opening a, the surface of the reflector has spots aa}, which are plain or flat and in making the reflectors these lainsurfaces are so arranged that they will be directly behind the center ofthe rays of light from the filaments 6 From each of the spots 0, theinner surface of the reflector is formed with series of corrugations (Z,'a which radiate on curved lines from the spots as centers and most ofwhich extend to the periphery of the reflector.

It will be apparent that as the rays of light from the lamp filamentsare pro ected radially on straight lines that such rays willintersectlthe rays reflected from the corrugated surfaces of thereflector, the eflect of which is to break upor difiuse the rays whichare r0- jected from the latter. The increase in rilliancy due to themultiplicity of reflectlng concavo-convex surfaces is well known in thisart, and it is apparent that I'get the benefit of such results in thisinvention.

This reflector Will be so mounted or hung that the rays of light will bethrown directly upon the objects to be illumined, the an le and generalcontour of its walls being esigned to contribute to the reflective powerof the corrugated surfaces.

Having thus described my invention, I claim p 1. A reflector consistingof a hood-like structure of suitable material, having a central openingto receive a lam attachment, and having the reflecting surace onopposite sides of said opening formed into series of corrugations, thecorrugations of each series radiating on curved and slightly diverginglines from a common center.

2 A light-reflector consisting of a hoodlike structure, rectangular, inoutline, and

having its reflecting 'surface formed with one or more substantiallyflat spots and with corrugations radiating from said spots on curved anddiverging lines extending to the margins of the structure, the depth ofsaid corrugations being substantially the same throughout their length.1

In testimony whereof I aflix my signature in presence of two witnesses.

AUGUSTUS D. CURTIS.

Witnesses F. BENJAMIN, WM. B. Moon.

